Physical and Chemical Properties

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2 Lesson ObjectivesI can distinguish between physical and chemical properties of matter.

3 Lesson Outline To view a Power Point presentationComplete students notes and learn a song.Do 2 group activities that will practice the skill objective.Play class physical and chemical BINGOChoose 1 from 4 independent activities and complete for a grade.

4 Physical and Chemical Change Song Sung by Michael Offutt Produced by Evelyn TurciosChange, it’s everywhere you goChange, it may be fast or slowChange, you can’t deny it but at least you can learn to classify itPut a can of cola in the freezer, the water in the cola turns to ice, it pushes on the can and explodes. Clean it upthat mess is not so nice.Now ice seems different than water but its true identity is the same, What do you say when you see this kind ofthing, you call it a physical change.Light a match and start a candle burning, see how it gives off heat and light. Don’t stick your finger in that hotwax, people who do that aren’t too bright.The wax is doing more than melting, it’s atoms move around and rearrange, Co2 and water are produced when itburns, you call that chemical change.So what kind of change is iron rusting or when a leaf turns from green to red,What’s going on when you grind a rock to dust or when you grow an hair on your headWhat kind of change is paper burning or when you hammer metal into foil, what happens when you put AlkaSeltzer tablet on your tongue or when you make a pot of water boil

5 What are physical changes?Physical changes are changes in the way matter looks.A physical change can also take place when matter changes from one state to another state.Changes in size and shape are physical changes.Can you think of ways that you can physically change a sheet of paper?

6 Here are some ways you can physically change a sheet of paper:CuttingTearingShreddingFoldingPaintingWriting onGluing

7 Characteristics of Physical PropertiesVapor pressureColorTextureState of matterCreate no new substanceDensityElectrical conductivitySolubilityAdsorption to a surfaceHardnessMelting pointBoiling point

8 What are chemical changes?Chemical changes are the opposite of physical changes.Chemical changes take place when matter changes to a different kind of matter.Can you think of one item on the table that could be changed chemically?

9 Here are some examples of chemical changes:An Iodine test will turn food black, if it contains starchAlka SeltzerBubbles in water

10 Signs of Chemical Propertiesgas bubblescolor change - leaves turning colors in the fall, rust appearingdisappearance of color – fading fabricheat or lightA new substance is madeCan not be reversed

11 Quick Review What is a physical change?A physical change is a change in the size, shape, state, or appearance of matter.What is a chemical change?A chemical change causes matter to become a new kind of matter.

12 You are now ready to play“Name That Change!”How To PlayFor each item, you will need to tell whether a physical or a chemical change has taken place!